Patents by Inventor Masanobu Igeta

Masanobu Igeta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7129185
    Abstract: A substrate processing method includes the steps of removing carbon from a surface of a silicon substrate by irradiating an ultraviolet light on the surface in an essentially ultraviolet nonreactive gas atmosphere and forming an oxide film or an oxynitride film on the surface of the silicon substrate by irradiating an ultraviolet light thereon in an essentially ultraviolet reactive gas atmosphere. Further, a computer readable storage medium stores therein a program for controlling the substrate processing method.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: October 31, 2006
    Assignee: Tokyo Electron Limited
    Inventors: Shintaro Aoyama, Masanobu Igeta, Hiroshi Shinriki
  • Patent number: 7125799
    Abstract: A substrate processing method includes the step of removing carbon from a silicon substrate surface and planarizing the silicon substrate surface from which carbon has been removed.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: October 24, 2006
    Assignee: Tokyo Electron Limited
    Inventors: Shintaro Aoyama, Masanobu Igeta, Hiroshi Shinriki, Tsuyoshi Takahashi
  • Publication number: 20060234515
    Abstract: A film forming method for forming an oxide film on a surface of a substrate to be processed in a processing vessel at a predetermined processing temperature, wherein the method includes a temperature elevating step of elevating a temperature of said substrate to a predetermined processing temperature, the step of elevating the temperature including a step of holding the substrate in an atmosphere containing oxygen before the substrate reaches a temperature of 450° C. The film forming method further comprises, after the step of elevating the temperature, a film forming step of forming a radical oxide film by irradiating the substrate surface with energy capable of exciting an oxygen gas.
    Type: Application
    Filed: June 16, 2006
    Publication date: October 19, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Shintaro Aoyama, Masanobu Igeta, Kazuyoshi Yamazaki
  • Publication number: 20060228902
    Abstract: The present invention generally provides a method for preparing an oxynitride film on a substrate. A surface of the substrate is exposed to oxygen radicals formed by ultraviolet (UV) radiation induced dissociation of a first process gas comprising at least one molecular composition comprising oxygen to form an oxide film on the surface. The oxide film is exposed to nitrogen radicals formed by plasma induced dissociation of a second process gas comprising at least one molecular composition comprising nitrogen using plasma based on microwave irradiation via a plane antenna member having a plurality of slits to nitridate the oxide film and form the oxynitride film.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 12, 2006
    Inventors: Masanobu Igeta, Cory Wajda, David O'Meara, Kristen Scheer, Toshihara Eurakawa
  • Publication number: 20060228898
    Abstract: A method for preparing an interfacial layer for a high-k dielectric layer on a substrate. A surface of said substrate is exposed to oxygen radicals formed by ultraviolet (UV) radiation induced dissociation of a first process gas comprising at least one molecular composition comprising oxygen to form an oxide film. The oxide film is exposed to nitrogen radicals formed by plasma induced dissociation of a second process gas comprising at least one molecular composition comprising nitrogen to nitridate the oxide film to form the interfacial layer. A high-k dielectric layer is formed on said interfacial layer.
    Type: Application
    Filed: March 30, 2005
    Publication date: October 12, 2006
    Inventors: Cory Wajda, Masanobu Igeta, Gerrit Leusink
  • Publication number: 20060205188
    Abstract: A method to solve such a problem that plasma will not ignite in restarting operation of a processing container that has not been operated with the inside kept drawn to vacuum. Gas containing oxygen is passed in a processing container 21, and ultraviolet light is irradiated to the gas while gas inside the processing container 21 is being discharged. After that, a remote plasma source 26 is driven to ignite plasma.
    Type: Application
    Filed: May 12, 2006
    Publication date: September 14, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masanobu Igeta, Kazuyoshi Yamazaki, Shintaro Aoyama, Hiroshi Shinriki
  • Publication number: 20060174833
    Abstract: It is intended to efficiently nitride an extremely thin oxide film or oxynitride film of 0.4 nm or less thickness while minimizing a film increase. In particular, oxygen radicals are generated through oxygen radical generating unit so as to oxidize a silicon substrate with the generated oxygen radicals, thereby forming an oxide film on the silicon substrate, and further nitrogen radicals are generated through nitrogen radical generating unit so as to nitride the surface of the oxide film, thereby forming an oxynitride film.
    Type: Application
    Filed: December 8, 2003
    Publication date: August 10, 2006
    Applicant: Tokyo Electron Limited
    Inventors: Kazuyoshi Yamazaki, Shintaro Aoyama, Masanobu Igeta, Hiroshi Shinriki
  • Publication number: 20060009044
    Abstract: A substrate-processing apparatus (100, 40) comprises a radical-forming unit (26) for forming the nitrogen radicals and oxygen radicals through a high-frequency plasma, a processing vessel (21) in which a substrate (W) to be processed is held, and a gas-supplying unit (30) which is connected to the radical-forming unit. The gas-supplying unit (30) controls the mixture ratio between a first raw material gas containing the nitrogen and a second raw material gas containing oxygen, and supplies a mixture gas of a desired mixture ratio to the radical-forming unit. By supplying the nitrogen radicals and oxygen radicals mixed at the controlled mixture ratio to the surface of the substrate, an insulating film having a desired nitrogen concentration is formed on the surface of the substrate.
    Type: Application
    Filed: September 19, 2003
    Publication date: January 12, 2006
    Inventors: Masanobu Igeta, Shintaro Aoyama, Hiroshi Shinriki
  • Patent number: 6927112
    Abstract: A method of nitriding an insulation film, includes the steps of forming nitrogen radicals by high-frequency plasma, and causing nitridation in a surface of an insulation film containing therein oxygen, by supplying the nitrogen radicals to the surface of the insulation film.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: August 9, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Masanobu Igeta, Shintaro Aoyama, Hiroshi Shinriki, Tsuyoshi Takahashi
  • Publication number: 20050170541
    Abstract: A method of nitriding an insulation film, includes the steps of forming nitrogen radicals by high-frequency plasma, and causing nitridation in a surface of an insulation film containing therein oxygen, by supplying the nitrogen radicals to the surface of the insulation film.
    Type: Application
    Filed: March 23, 2005
    Publication date: August 4, 2005
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Masanobu Igeta, Shintaro Aoyama, Hiroshi Shinriki, Tsuyoshi Takahashi
  • Publication number: 20050079720
    Abstract: A substrate processing method includes the steps of removing carbon from a surface of a silicon substrate by irradiating an ultraviolet light on the surface in an essentially ultraviolet nonreactive gas atmosphere and forming an oxide film or an oxynitride film on the surface of the silicon substrate by irradiating an ultraviolet light thereon in an essentially ultraviolet reactive gas atmosphere. Further, a computer readable storage medium stores therein a program for controlling the substrate processing method.
    Type: Application
    Filed: October 19, 2004
    Publication date: April 14, 2005
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Shintaro Aoyama, Masanobu Igeta, Hiroshi Shinriki
  • Publication number: 20040241991
    Abstract: A substrate processing method includes the step of removing carbon from a silicon substrate surface and planarizing the silicon substrate surface from which carbon has been removed.
    Type: Application
    Filed: April 9, 2004
    Publication date: December 2, 2004
    Inventors: Shintaro Aoyama, Masanobu Igeta, Hiroshi Shinriki, Tsuyoshi Takahashi
  • Publication number: 20040053472
    Abstract: This method for film formation has a first step of forming a first insulation film, the essential component of which is a material having a first dielectric constant, on the surface of a semiconductor substrate and a second step of forming a second insulation film, the essential component of which is a material having a second dielectric constant larger than the first dielectric constant, on the first insulation film to be thicker than this first insulation film. Since the process of forming a film of a high dielectric constant material that constitutes the second insulation film is executed successively, following the formation of a barrier layer that is the first insulation film, it is possible to form a gate of a high dielectric constant material stable to the substrate.
    Type: Application
    Filed: October 14, 2003
    Publication date: March 18, 2004
    Inventors: Hideki Kiryu, Tsuyoshi Takahashi, Shintaro Aoyama, Hiroshi Shinriki, Masanobu Igeta
  • Publication number: 20040023513
    Abstract: A radical source is movably provided in a processing vessel holding a substrate, and the location or driving energy of the radical source is set such that the film formed on the substrate has a uniform thickness. Further, a radical source is provided at a first side of the substrate and a radical flow is formed such that the radical flow flows from the first side of the substrate surface to the other side. By optimizing the condition of the radical flow, the film formed on the substrate has a uniform thickness.
    Type: Application
    Filed: June 13, 2003
    Publication date: February 5, 2004
    Inventors: Shintaro Aoyama, Hiroshi Shinriki, Masanobu Igeta
  • Publication number: 20030170945
    Abstract: A method of nitriding an insulation film, includes the steps of forming nitrogen radicals by high-frequency plasma, and causing nitridation in a surface of an insulation film containing therein oxygen, by supplying the nitrogen radicals to the surface of the insulation film.
    Type: Application
    Filed: December 6, 2002
    Publication date: September 11, 2003
    Applicant: Tokyo Electron Limited
    Inventors: Masanobu Igeta, Shintaro Aoyama, Hiroshi Shinriki, Tsuyoshi Takahashi